Because changing the operational mode to Transparent resets device (or vdom) to all defaults, which precautions should an Administrator take prior to performing this? (Select all that apply.)

Backing up the configuration is crucial because changing the operational mode to Transparent resets the device to its default settings, erasing any existing custom configurations, thus ensuring that the administrator can restore the previous working configuration.

When a FortiGate is switched to Transparent mode, it operates as a Layer 2 bridge, making it susceptible to creating network loops if redundant cables are present and not properly managed with Spanning Tree Protocol (STP).

Setting the unit to factory defaults is precisely what happens automatically when changing to Transparent mode, so explicitly performing this action beforehand is redundant.

Updating IPS and AV files is a regular maintenance task for security hygiene but is not a direct precaution for the configuration reset or Layer 2 implications specifically caused by changing the operational mode to Transparent.